Regex reuse a pattern to capture multiple groups?

Question

I would like to match some pattern multiple times, exactly like described here.

^(somelongpattern[0-9])([,; ]+(?1))*$

This will match for e

Answer 1

In reviewing the Java documentation they still do not follow the PCRE guidelines for subroutines. Basically Java Regex does not support subroutines.

see also Java Regex Manual